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go-eol
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master
Charles Iliya Krempeaux 2023-11-27 11:32:08 -08:00
parent a418be929b
commit 2c6b49c325
11 changed files with 1212 additions and 0 deletions
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50
notfound.go 100644
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package eol
import (
"fmt"
)
var _ error = internalNotFoundError{}
type internalNotFoundError struct{
expected rune
actual rune
}
func (receiver internalNotFoundError) Error() string {
var buffer [256]byte
var p []byte = buffer[0:0]
var expected rune = receiver.expected
var actual rune = receiver.actual
switch expected {
case lf:
var s string = fmt.Sprintf(`eol: line-feed (LF) character ('\n') (U+000A) not found — instead found %q (%U)`, actual, actual)
p = append(p, s...)
case cr:
var s string = fmt.Sprintf(`eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found %q (%U)`, actual, actual)
p = append(p, s...)
case nel:
var s string = fmt.Sprintf(`eol: next-line (NEL) character (U+0085) not found — instead found %q (%U)`, actual, actual)
p = append(p, s...)
case ls:
var s string = fmt.Sprintf(`eol: line-separator (LS) character (U+2028) not found — instead found %q (%U)`, actual, actual)
p = append(p, s...)
default:
var s string = fmt.Sprintf(`eol: %q character (%U) not found — instead found %q (%U)`, expected, expected, actual, actual)
p = append(p, s...)
}
return string(p)
}
func (receiver internalNotFoundError) Actual() rune {
return receiver.actual
}
func (receiver internalNotFoundError) Expected() rune {
return receiver.expected
}

9
readcr.go 100644
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package eol
import (
"io"
)
func ReadCR(runescanner io.RuneScanner) (size int, err error) {
return readthisrune(runescanner, cr)
}

209
readcr_test.go 100644
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package eol_test
import (
"testing"
"io"
"strings"
"sourcecode.social/reiver/go-utf8"
"sourcecode.social/reiver/go-eol"
)
func TestReadCR(t *testing.T) {
tests := []struct{
Value string
ExpectedSize int
}{
{
Value: "\r",
ExpectedSize: 1,
},
{
Value: "\rapple banana cherry",
ExpectedSize: 1,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadCR(runescanner)
if nil != err {
t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
t.Logf("ERROR: (%T) %s", err, err)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedSize
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}
func TestReadCR_fail(t *testing.T) {
tests := []struct{
Value string
ExpectedError string
}{
{
Value: "",
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "\n",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '\n' (U+000A)`,
},
{
Value: "\u0085",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '\u0085' (U+0085)`,
},
{
Value: "\u2028",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '\u2028' (U+2028)`,
},
{
Value: "😈",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '😈' (U+1F608)`,
},
{
Value: "\napple banana cherry",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '\n' (U+000A)`,
},
{
Value: "\u0085apple banana cherry",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '\u0085' (U+0085)`,
},
{
Value: "\u2028apple banana cherry",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '\u2028' (U+2028)`,
},
{
Value: "😈apple banana cherry",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '😈' (U+1F608)`,
},
{
Value: " \n",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found ' ' (U+0020)`,
},
{
Value: " \r",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u0085",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u2028",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found ' ' (U+0020)`,
},
{
Value: " 😈",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found ' ' (U+0020)`,
},
{
Value: ".\n",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '.' (U+002E)`,
},
{
Value: ".\r",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u0085",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u2028",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '.' (U+002E)`,
},
{
Value: ".😈",
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '.' (U+002E)`,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadCR(runescanner)
if nil == err {
t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
t.Logf("EXPECTED-ERROR: %q", test.ExpectedError)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedError
actual := err.Error()
if expected != actual {
t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
t.Logf("EXPECTED: %q", expected)
t.Logf("ACTUAL: %q", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
{
expected := 0
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}

9
readlf.go 100644
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package eol
import (
"io"
)
func ReadLF(runescanner io.RuneScanner) (size int, err error) {
return readthisrune(runescanner, lf)
}

209
readlf_test.go 100644
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package eol_test
import (
"testing"
"io"
"strings"
"sourcecode.social/reiver/go-utf8"
"sourcecode.social/reiver/go-eol"
)
func TestReadLF(t *testing.T) {
tests := []struct{
Value string
ExpectedSize int
}{
{
Value: "\n",
ExpectedSize: 1,
},
{
Value: "\napple banana cherry",
ExpectedSize: 1,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadLF(runescanner)
if nil != err {
t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
t.Logf("ERROR: (%T) %s", err, err)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedSize
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}
func TestReadLF_fail(t *testing.T) {
tests := []struct{
Value string
ExpectedError string
}{
{
Value: "",
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "\r",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '\r' (U+000D)`,
},
{
Value: "\u0085",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '\u0085' (U+0085)`,
},
{
Value: "\u2028",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '\u2028' (U+2028)`,
},
{
Value: "😈",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '😈' (U+1F608)`,
},
{
Value: "\rapple banana cherry",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '\r' (U+000D)`,
},
{
Value: "\u0085apple banana cherry",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '\u0085' (U+0085)`,
},
{
Value: "\u2028apple banana cherry",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '\u2028' (U+2028)`,
},
{
Value: "😈apple banana cherry",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '😈' (U+1F608)`,
},
{
Value: " \n",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found ' ' (U+0020)`,
},
{
Value: " \r",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u0085",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u2028",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found ' ' (U+0020)`,
},
{
Value: " 😈",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found ' ' (U+0020)`,
},
{
Value: ".\n",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '.' (U+002E)`,
},
{
Value: ".\r",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u0085",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u2028",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '.' (U+002E)`,
},
{
Value: ".😈",
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '.' (U+002E)`,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadLF(runescanner)
if nil == err {
t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
t.Logf("EXPECTED-ERROR: %q", test.ExpectedError)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedError
actual := err.Error()
if expected != actual {
t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
t.Logf("EXPECTED: %q", expected)
t.Logf("ACTUAL: %q", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
{
expected := 0
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}

9
readls.go 100644
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package eol
import (
"io"
)
func ReadLS(runescanner io.RuneScanner) (size int, err error) {
return readthisrune(runescanner, ls)
}

209
readls_test.go 100644
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package eol_test
import (
"testing"
"io"
"strings"
"sourcecode.social/reiver/go-utf8"
"sourcecode.social/reiver/go-eol"
)
func TestReadLS(t *testing.T) {
tests := []struct{
Value string
ExpectedSize int
}{
{
Value: "\u2028",
ExpectedSize: 3,
},
{
Value: "\u2028apple banana cherry",
ExpectedSize: 3,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadLS(runescanner)
if nil != err {
t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
t.Logf("ERROR: (%T) %s", err, err)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedSize
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}
func TestReadLS_fail(t *testing.T) {
tests := []struct{
Value string
ExpectedError string
}{
{
Value: "",
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "\n",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '\n' (U+000A)`,
},
{
Value: "\r",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '\r' (U+000D)`,
},
{
Value: "\u0085",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '\u0085' (U+0085)`,
},
{
Value: "😈",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '😈' (U+1F608)`,
},
{
Value: "\napple banana cherry",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '\n' (U+000A)`,
},
{
Value: "\rapple banana cherry",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '\r' (U+000D)`,
},
{
Value: "\u0085apple banana cherry",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '\u0085' (U+0085)`,
},
{
Value: "😈apple banana cherry",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '😈' (U+1F608)`,
},
{
Value: " \n",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found ' ' (U+0020)`,
},
{
Value: " \r",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u0085",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u2028",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found ' ' (U+0020)`,
},
{
Value: " 😈",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found ' ' (U+0020)`,
},
{
Value: ".\n",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '.' (U+002E)`,
},
{
Value: ".\r",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u0085",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u2028",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '.' (U+002E)`,
},
{
Value: ".😈",
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '.' (U+002E)`,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadLS(runescanner)
if nil == err {
t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
t.Logf("EXPECTED-ERROR: %q", test.ExpectedError)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedError
actual := err.Error()
if expected != actual {
t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
t.Logf("EXPECTED: %q", expected)
t.Logf("ACTUAL: %q", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
{
expected := 0
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}

9
readnel.go 100644
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package eol
import (
"io"
)
func ReadNEL(runescanner io.RuneScanner) (size int, err error) {
return readthisrune(runescanner, nel)
}

209
readnel_test.go 100644
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package eol_test
import (
"testing"
"io"
"strings"
"sourcecode.social/reiver/go-utf8"
"sourcecode.social/reiver/go-eol"
)
func TestReadNEL(t *testing.T) {
tests := []struct{
Value string
ExpectedSize int
}{
{
Value: "\u0085",
ExpectedSize: 2,
},
{
Value: "\u0085apple banana cherry",
ExpectedSize: 2,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadNEL(runescanner)
if nil != err {
t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
t.Logf("ERROR: (%T) %s", err, err)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedSize
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}
func TestReadNEL_fail(t *testing.T) {
tests := []struct{
Value string
ExpectedError string
}{
{
Value: "",
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "\n",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '\n' (U+000A)`,
},
{
Value: "\r",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '\r' (U+000D)`,
},
{
Value: "\u2028",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '\u2028' (U+2028)`,
},
{
Value: "😈",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '😈' (U+1F608)`,
},
{
Value: "\napple banana cherry",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '\n' (U+000A)`,
},
{
Value: "\rapple banana cherry",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '\r' (U+000D)`,
},
{
Value: "\u2028apple banana cherry",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '\u2028' (U+2028)`,
},
{
Value: "😈apple banana cherry",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '😈' (U+1F608)`,
},
{
Value: " \n",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found ' ' (U+0020)`,
},
{
Value: " \r",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u0085",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u2028",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found ' ' (U+0020)`,
},
{
Value: " 😈",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found ' ' (U+0020)`,
},
{
Value: ".\n",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '.' (U+002E)`,
},
{
Value: ".\r",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u0085",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u2028",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '.' (U+002E)`,
},
{
Value: ".😈",
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '.' (U+002E)`,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := eol.ReadNEL(runescanner)
if nil == err {
t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
t.Logf("EXPECTED-ERROR: %q", test.ExpectedError)
t.Logf("VALUE: %q", test.Value)
continue
}
{
expected := test.ExpectedError
actual := err.Error()
if expected != actual {
t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
t.Logf("EXPECTED: %q", expected)
t.Logf("ACTUAL: %q", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
{
expected := 0
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
continue
}
}
}
}

38
readthisrune.go 100644
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@ -0,0 +1,38 @@
package eol
import (
"io"
)
func readthisrune(runescanner io.RuneScanner, expected rune) (size int, err error) {
if nil == runescanner {
return 0, errNilRuneScanner
}
var r rune
{
var err error
r, size, err = runescanner.ReadRune()
if nil != err {
const runeNumber = 1
return size, errProblemReadingRune(err, runeNumber)
}
}
{
actual := r
if expected != actual {
err := runescanner.UnreadRune()
if nil != err {
const runeNumber = 1
return size, errProblemUnreadingRune(err, runeNumber, r)
}
return 0, internalNotFoundError{expected: expected, actual: r}
}
}
return size, nil
}

252
readthisrune_test.go 100644
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@ -0,0 +1,252 @@
package eol
import (
"testing"
"io"
"strings"
"sourcecode.social/reiver/go-utf8"
)
func TestReadThisRune(t *testing.T) {
tests := []struct{
Value string
Rune rune
ExpectedSize int
}{
{
Value: "\n",
Rune: '\n',
ExpectedSize: 1,
},
{
Value: "\r",
Rune: '\r',
ExpectedSize: 1,
},
{
Value: "\u0085",
Rune: '\u0085',
ExpectedSize: 2,
},
{
Value: "\u2028",
Rune: '\u2028',
ExpectedSize: 3,
},
{
Value: "😈",
Rune: '😈',
ExpectedSize: 4,
},
{
Value: "\napple banana cherry",
Rune: '\n',
ExpectedSize: 1,
},
{
Value: "\rapple banana cherry",
Rune: '\r',
ExpectedSize: 1,
},
{
Value: "\u0085apple banana cherry",
Rune: '\u0085',
ExpectedSize: 2,
},
{
Value: "\u2028apple banana cherry",
Rune: '\u2028',
ExpectedSize: 3,
},
{
Value: "😈apple banana cherry",
Rune: '😈',
ExpectedSize: 4,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := readthisrune(runescanner, test.Rune)
if nil != err {
t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
t.Logf("ERROR: (%T) %s", err, err)
t.Logf("VALUE: %q", test.Value)
t.Logf("RUNE: %q", test.Rune)
continue
}
{
expected := test.ExpectedSize
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
t.Logf("RUNE: %q", test.Rune)
continue
}
}
}
}
func TestReadThisRune_fail(t *testing.T) {
tests := []struct{
Value string
Rune rune
ExpectedError string
}{
{
Value: "",
Rune: '\n',
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "",
Rune: '\r',
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "",
Rune: '\u0085',
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "",
Rune: '\u2028',
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: "",
Rune: '😈',
ExpectedError: `eol: problem reading rune №1 of end-of-line sequence: EOF`,
},
{
Value: " \n",
Rune: '\n',
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found ' ' (U+0020)`,
},
{
Value: " \r",
Rune: '\r',
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u0085",
Rune: '\u0085',
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found ' ' (U+0020)`,
},
{
Value: " \u2028",
Rune: '\u2028',
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found ' ' (U+0020)`,
},
{
Value: " 😈",
Rune: '😈',
ExpectedError: `eol: '😈' character (U+1F608) not found — instead found ' ' (U+0020)`,
},
{
Value: ".\n",
Rune: '\n',
ExpectedError: `eol: line-feed (LF) character ('\n') (U+000A) not found — instead found '.' (U+002E)`,
},
{
Value: ".\r",
Rune: '\r',
ExpectedError: `eol: carriage-return (CR) character ('\r') (U+000D) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u0085",
Rune: '\u0085',
ExpectedError: `eol: next-line (NEL) character (U+0085) not found — instead found '.' (U+002E)`,
},
{
Value: ".\u2028",
Rune: '\u2028',
ExpectedError: `eol: line-separator (LS) character (U+2028) not found — instead found '.' (U+002E)`,
},
{
Value: ".😈",
Rune: '😈',
ExpectedError: `eol: '😈' character (U+1F608) not found — instead found '.' (U+002E)`,
},
}
for testNumber, test := range tests {
var reader io.Reader = strings.NewReader(test.Value)
var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
actualSize, err := readthisrune(runescanner, test.Rune)
if nil == err {
t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
t.Logf("EXPECTED-ERROR: %q", test.ExpectedError)
t.Logf("VALUE: %q", test.Value)
t.Logf("RUNE: %q", test.Rune)
continue
}
{
expected := test.ExpectedError
actual := err.Error()
if expected != actual {
t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
t.Logf("EXPECTED: %q", expected)
t.Logf("ACTUAL: %q", actual)
t.Logf("VALUE: %q", test.Value)
t.Logf("RUNE: %q", test.Rune)
continue
}
}
{
expected := 0
actual := actualSize
if expected != actual {
t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
t.Logf("EXPECTED: %d", expected)
t.Logf("ACTUAL: %d", actual)
t.Logf("VALUE: %q", test.Value)
t.Logf("RUNE: %q", test.Rune)
continue
}
}
}
}